update k6 run command to include docker example

Author: mdcruz

src/data/markdown/docs/02 javascript api/07 k6-experimental/01 browser.md

@@ -79,12 +79,18 @@ export default async function () {
 
 Then, you can run the test with this command. Also, see the [browser module options](/javascript-api/k6-experimental/browser/#browser-module-options) for customizing the browser module's behavior using environment variables.
 
-<CodeGroup labels={["Bash", "Windows: CMD", "Windows: PowerShell"]} lineNumbers={[false]}>
+<CodeGroup labels={["Bash", "Docker", "Windows: CMD", "Windows: PowerShell"]} lineNumbers={[false]}>
 
 ```bash
 $ k6 run script.js
 ```
 
+```bash
+# When using the `k6:master-with-browser` Docker image, you need to add `--cap-add=SYS_ADMIN`
+# to grant further system permissions on the host for the Docker container.
+docker run --rm -i --cap-add=SYS_ADMIN grafana/k6:master-with-browser run - <script.js
+```
+
 ```bash
 C:\k6> k6 run script.js
 ```
@@ -131,11 +137,16 @@ You can customize the behavior of the browser module by providing browser option
 
 The following command passes the [browser module options](#browser-module-options) as environment variables to launch a headful browser with custom arguments.
 
-<CodeGroup labels={["Bash", "Windows: CMD", "Windows: PowerShell"]} lineNumbers={[false]}>
+<CodeGroup labels={["Bash", "Docker", "Windows: CMD", "Windows: PowerShell"]} lineNumbers={[false]}>
 
 ```bash
 $ K6_BROWSER_HEADLESS=false K6_BROWSER_ARGS='show-property-changed-rects' k6 run script.js
 ```
+```bash
+# When using the `k6:master-with-browser` Docker image, you need to add `--cap-add=SYS_ADMIN`
+# to grant further system permissions on the host for the Docker container.
+docker run --rm -i --cap-add=SYS_ADMIN -e K6_BROWSER_HEADLESS=false -e K6_BROWSER_ARGS='show-property-changed-rects' grafana/k6:master-with-browser run - <script.js
+```
 
 ```bash
 C:\k6> set "K6_BROWSER_HEADLESS=false" && set "K6_BROWSER_ARGS='show-property-changed-rects' " && k6 run script.js

src/data/markdown/translated-guides/en/03 Using k6 browser/01 Overview.md

@@ -128,4 +128,4 @@ ui   ✓ [======================================] 1 VUs  00m01.3s/10m0s  1/1 sha
 
 </CodeGroup>
 
-This gives you a representation of browser performance as well as the usual HTTP specific metrics that k6 already tracks which lets you have a full picture on how your application behaves from a frontend and backend perspective, all in a single script.
+This gives you a representation of browser performance, via the web vitals, as well as the HTTP requests that came from the browser. 

src/data/markdown/translated-guides/en/03 Using k6 browser/02 Running browser tests.md

@@ -82,13 +82,11 @@ $ k6 run script.js
 ```bash
 # When using the `k6:master-with-browser` Docker image, you need to add `--cap-add=SYS_ADMIN`
 # to grant further system permissions on the host for the Docker container.
-# There is also no need to set the K6_BROWSER_ENABLED variable explicitly since this is already
-# defined in the Dockerfile.
 docker run --rm -i --cap-add=SYS_ADMIN grafana/k6:master-with-browser run - <script.js
 ```
 
 ```bash
-C:\k6> set "K6_BROWSER_ENABLED=true" && k6 run script.js
+C:\k6> k6 run script.js
 ```
 
 ```bash
@@ -99,12 +97,18 @@ PS C:\k6> k6 run script.js
 
 You can also use [the browser module options](/javascript-api/k6-experimental/browser/#browser-module-options) to customize the launching of a browser process. For instance, you can start a headful browser using the previous test script with this command.
 
-<CodeGroup labels={["Bash", "Windows: CMD", "Windows: PowerShell"]} lineNumbers={[false]}>
+<CodeGroup labels={["Bash", "Docker", "Windows: CMD", "Windows: PowerShell"]} lineNumbers={[false]}>
 
 ```bash
 $ K6_BROWSER_HEADLESS=false k6 run script.js
 ```
 
+```bash
+# When using the `k6:master-with-browser` Docker image, you need to add `--cap-add=SYS_ADMIN`
+# to grant further system permissions on the host for the Docker container.
+docker run --rm -i --cap-add=SYS_ADMIN -e K6_BROWSER_HEADLESS=false grafana/k6:master-with-browser run - <script.js
+```
+
 ```bash
 C:\k6> set "K6_BROWSER_HEADLESS=false" && k6 run script.js
 ```